#pragma once

#include<iostream>
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<unistd.h>
#include<sys/types.h>
#include<sys/wait.h>
#include<sys/stat.h>
#include<fcntl.h>
#define ARGS 64

void PrintCommandString();//打印命令行提示符

bool GetCommandString(char commandstring[],size_t len);

bool PraseCommandString(char commandstring[]);

bool ForkExe();

bool bulitin();

bool Check_redir(char* Str);

